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http://git.haproxy.org/git/haproxy.git/
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f09c6603d3
The principle behind this load balancing algorithm was first imagined and modeled by Steen Larsen then iteratively refined through several work sessions until it would totally address its original goal. The purpose of this algorithm is to always use the smallest number of servers so that extra servers can be powered off during non-intensive hours. Additional tools may be used to do that work, possibly by locally monitoring the servers' activity. The first server with available connection slots receives the connection. The servers are choosen from the lowest numeric identifier to the highest (see server parameter "id"), which defaults to the server's position in the farm. Once a server reaches its maxconn value, the next server is used. It does not make sense to use this algorithm without setting maxconn. Note that it can however make sense to use minconn so that servers are not used at full load before starting new servers, and so that introduction of new servers requires a progressively increasing load (the number of servers would more or less follow the square root of the load until maxconn is reached). This algorithm ignores the server weight, and is more beneficial to long sessions such as RDP or IMAP than HTTP, though it can be useful there too.
152 lines
5.0 KiB
Makefile
152 lines
5.0 KiB
Makefile
# This makefile is dedicated to OpenBSD (and possibly other BSDs)
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# You should use it this way :
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# make TARGET=os CPU=cpu
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#
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# Some optional components may be added, such as DLMALLOC :
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#
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# make TARGET=freebsd CPU=i686 DLMALLOC_SRC=/usr/local/src/dlmalloc.c \
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# OPT_OBJS=src/dlmalloc.o
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# Select target OS. TARGET must match a system for which COPTS and LIBS are
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# correctly defined below.
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TARGET = openbsd
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# pass CPU=<cpu_name> to make to optimize for a particular CPU
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CPU = generic
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#CPU = native
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#CPU = i586
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#CPU = i686
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#CPU = ultrasparc
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# By default, we use libc's regex. WARNING! On Solaris 8/Sparc, group
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# references seem broken using libc ! Use pcre instead.
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REGEX=libc
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#REGEX=pcre
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#REGEX=static-pcre
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# tools options
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CC = gcc
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LD = gcc
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# This is the directory hosting include/pcre.h and lib/libpcre.* when REGEX=pcre
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PCREDIR!= pcre-config --prefix 2>/dev/null || :
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#PCREDIR=/usr/local
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# This is for OpenBSD 3.0 and above
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COPTS.openbsd = -DENABLE_POLL -DENABLE_KQUEUE
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LIBS.openbsd =
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# CPU dependant optimizations
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COPTS.generic = -O2
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COPTS.native = -O2 -march=native
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COPTS.i586 = -O2 -march=i586
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COPTS.i686 = -O2 -march=i686
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COPTS.ultrasparc = -O6 -mcpu=v9 -mtune=ultrasparc
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# options for standard regex library
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COPTS.libc=
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LIBS.libc=
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# options for libpcre
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COPTS.pcre=-DUSE_PCRE -I$(PCREDIR)/include
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LIBS.pcre=-L$(PCREDIR)/lib -lpcreposix -lpcre
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# options for static libpcre
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COPTS.static-pcre=-DUSE_PCRE -I$(PCREDIR)/include
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LIBS.static-pcre=-L$(PCREDIR)/lib -Wl,-Bstatic -lpcreposix -lpcre -Wl,-Bdynamic
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# you can enable debug arguments with "DEBUG=-g" or disable them with "DEBUG="
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#DEBUG = -g -DDEBUG_MEMORY -DDEBUG_FULL
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DEBUG = -g
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# if small memory footprint is required, you can reduce the buffer size. There
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# are 2 buffers per concurrent session, so 16 kB buffers will eat 32 MB memory
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# with 1000 concurrent sessions. Putting it slightly lower than a page size
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# will avoid the additionnal paramters to overflow a page. 8030 bytes is
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# exactly 5.5 TCP segments of 1460 bytes.
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#SMALL_OPTS =
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SMALL_OPTS = -DBUFSIZE=8030 -DMAXREWRITE=1030 -DSYSTEM_MAXCONN=1024
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# redefine this if you want to add some special PATH to include/libs
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ADDINC =
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ADDLIB =
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# redefine this if you want to add some special .o files
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OPT_OBJS =
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# set some defines when needed.
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# Known ones are -DENABLE_POLL
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# - use -DTPROXY to compile with transparent proxy support.
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# - use -DUSE_GETADDRINFO to use of getaddrinfo() to resolve IPv6 host names
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DEFINE = -DTPROXY
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# May be changed to patch PAGE_SIZE on every platform when using dlmalloc
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DLMALLOC_THRES=4096
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# global options
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TARGET_OPTS=$(COPTS.$(TARGET))
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REGEX_OPTS=$(COPTS.$(REGEX))
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CPU_OPTS=$(COPTS.$(CPU))
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SPEC_OPTS=-fno-strict-aliasing
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VERSION != cat VERSION 2>/dev/null || touch VERSION
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SUBVERS != cat SUBVERS 2>/dev/null || touch SUBVERS
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VERDATE != cat VERDATE 2>/dev/null || touch VERDATE
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VER_OPTS := -DCONFIG_HAPROXY_VERSION=\"$(VERSION)$(SUBVERS)\" \
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-DCONFIG_HAPROXY_DATE=\"$(VERDATE)\"
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# This one can be changed to look for ebtree files in an external directory
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EBTREE_DIR := ebtree
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COPTS = -Iinclude -I$(EBTREE_DIR) $(ADDINC) $(CPU_OPTS) $(TARGET_OPTS) \
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$(SPEC_OPTS) $(REGEX_OPTS) $(SMALL_OPTS) $(VER_OPTS) $(DEFINE)
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LIBS = $(LIBS.$(TARGET)) $(LIBS.$(REGEX)) $(ADDLIB)
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CFLAGS = -Wall $(COPTS) $(DEBUG)
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LDFLAGS = -g
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OBJS = src/haproxy.o src/sessionhash.o src/base64.o src/protocols.o \
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src/uri_auth.o src/standard.o src/buffers.o src/log.o src/task.o \
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src/time.o src/fd.o src/pipe.o src/regex.o src/cfgparse.o src/server.o \
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src/checks.o src/queue.o src/frontend.o src/proxy.o src/proto_uxst.o \
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src/proto_http.o src/stream_sock.o src/appsession.o src/backend.o \
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src/peers.o src/stream_interface.o src/dumpstats.o src/proto_tcp.o \
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src/session.o src/hdr_idx.o src/ev_select.o src/signal.o \
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src/lb_chash.o src/lb_fwlc.o src/lb_fwrr.o src/lb_map.o src/lb_fas.o \
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src/ev_poll.o src/ev_kqueue.o \
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src/acl.o src/memory.o src/freq_ctr.o \
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src/auth.o src/stick_table.o src/pattern.o
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EBTREE_OBJS = $(EBTREE_DIR)/ebtree.o \
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$(EBTREE_DIR)/eb32tree.o $(EBTREE_DIR)/eb64tree.o \
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$(EBTREE_DIR)/ebmbtree.o $(EBTREE_DIR)/ebsttree.o \
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$(EBTREE_DIR)/ebimtree.o $(EBTREE_DIR)/ebistree.o
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all: haproxy
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haproxy: $(OBJS) $(OPT_OBJS) $(EBTREE_OBJS)
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$(LD) $(LDFLAGS) -o $@ $> $(LIBS)
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.SUFFIXES: .c.o
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.c.o:
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$(CC) $(CFLAGS) -c -o $@ $>
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src/haproxy.o: src/haproxy.c
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$(CC) $(CFLAGS) -DBUILD_TARGET='"$(TARGET)"' -DBUILD_CC='"$(CC)"' \
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-DBUILD_CPU='"$(CPU)"' -DBUILD_REGEX='"$(REGEX)"' \
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-DBUILD_OPTS='"$(COPTS)"' -c -o $@ $>
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src/dlmalloc.o: $(DLMALLOC_SRC)
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$(CC) $(CFLAGS) -DDEFAULT_MMAP_THRESHOLD=$(DLMALLOC_THRES) -c -o $@ $>
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clean:
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rm -f *.[oas] src/*.[oas] ebtree/*.[oas] haproxy test
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for dir in . src include/* doc ebtree; do rm -f $$dir/*~ $$dir/*.rej $$dir/core; done
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rm -f haproxy-$(VERSION).tar.gz haproxy-$(VERSION) nohup.out gmon.out
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version:
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@echo "VERSION: $(VERSION)"
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@echo "SUBVERS: $(SUBVERS)"
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@echo "VERDATE: $(VERDATE)"
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